Chinese battery manufacturer Farasis Energy has begun pilot production of sulfide-based solid-state batteries. The company plans to deliver the first sample cells, with a capacity of 60 Ah, to strategic partners. Farasis Energy plans to establish a small-scale production line with an annual capacity of 200 megawatt hours by the end of 2025. Full industrialization at the gigawatt-hour level is scheduled for 2026.
The cell format currently being tested combines a high-nickel cathode with silicon or lithium metal anodes using a stacking process in pouch cell design. Ultimately, the goal is to achieve an energy density of over 400 Wh/kg. The battery’s solid-state electrolytes have reportedly withstood various stress tests, including puncture, shear, and heat chamber tests. Additionally, a shutdown system against thermal runaway has been integrated.
According to Farasis, other electric vehicle manufacturers beyond its existing partnerships are showing growing interest. Alongside its sulfide-based cells, Farasis is developing a second cell platform with an oxide-polymer composite electrolyte. Combined with lithium metal anodes and high-nickel cathodes, this architecture is expected to enable an energy density of up to 500 Wh/kg. To this end, Farasis Energy has developed its own process for manufacturing thin electrolyte layers.
Founded in 2009, Farasis Energy has been listed on the stock exchange since 2020. Its production is primarily focused in China, including for the EQE and EQS models from Mercedes-Benz.
